To reiterate - these are a complete mix of people, from refugees to people with green cards - that is, people who've been incredibly thoroughly vetted and given indefinite leave to remain. Some of those people with green cards are former army interpreters for the US for whom it is not safe for them to stay in their country of origin.
Saying "but the other countries don't allow Israelis in" is to miss the point completely. This is the US, which has long claimed to be the leader of the free world, removing freedoms from people it has granted them to. This is the US, which claims to have the best constitution in the world, acting in contravention of that constitution (freedom of religion). This is the US, which supposedly has massive checks and balances in its political system to prevent the executive arm (the President) usurping power all to himself, with that same President encouraging his employees to ignore a ruling from a federal judge.
And this is the country with the biggest nuclear arsenal in the world at its disposal, and Trump has his finger on the button.
If you think this is all unimportant, and trivial, and doesn't matter because every country has immigration rules, or the countries these people are coming from are worse (which was kind of the point, because the reason they wanted to leave these countries was to go somewhere better...) then you really need a crash course in politics. And an adjustment of your moral compass, because at the moment, it's pointing all over the place.